llama : reimplement logging

[ggerganov]

Rewrite the logging functionality in common/log.h with main goals:

• asynchronous logging
• log to file should be possible to disable
• compile-time verbosity level
• colors

[mirek190]

is possible logging conversation to a txt file ?

[ggerganov]

I will likely start working on this in a few days.

is possible logging conversation to a txt file ?

Will try to support this.

[mirek190]

I will likely start working on this in a few days.

is possible logging conversation to a txt file ?

Will try to support this.

Nice !

Waiting for it from ages .